FR2401101A1 - Treating waste water by activated sludge process - with preliminary fermentation in basin with controlled residence time - Google Patents

Treating waste water by activated sludge process - with preliminary fermentation in basin with controlled residence time

Info

Publication number
FR2401101A1
FR2401101A1 FR7725504A FR7725504A FR2401101A1 FR 2401101 A1 FR2401101 A1 FR 2401101A1 FR 7725504 A FR7725504 A FR 7725504A FR 7725504 A FR7725504 A FR 7725504A FR 2401101 A1 FR2401101 A1 FR 2401101A1
Authority
FR
France
Prior art keywords
basin
activated sludge
residence time
waste water
preliminary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7725504A
Other languages
French (fr)
Other versions
FR2401101B1 (en
Inventor
Nicole Angelier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
Original Assignee
Air Liquide SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA filed Critical Air Liquide SA
Priority to FR7725504A priority Critical patent/FR2401101A1/en
Priority to IT2693278A priority patent/IT1098279B/en
Publication of FR2401101A1 publication Critical patent/FR2401101A1/en
Application granted granted Critical
Publication of FR2401101B1 publication Critical patent/FR2401101B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/1205—Particular type of activated sludge processes
    • C02F3/121—Multistep treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/006—Regulation methods for biological treatment
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/26—Activated sludge processes using pure oxygen or oxygen-rich gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Abstract

The process uses a preliminary fermentation zone and then an activated sludge treatment zone. The residence time in the preliminary zone is controlled according to the pollutant charge of the water so that the multiplication of bacteria carries onto a level corresp. to the exponential phase. The process is carried out in an installation comprising 2 basins. The first fermentation basin has means to vary the volume of water it contains according to the pollution level. The first basin is linked to the second activated sludge basin by a conduit opt. provided with an adjustable valve, and opt. by a weir. The process avoids the risk of destruction of the activated sludge, partic. protozoa, by, for example, effluent from distilleries and paper-making. It enables great adaptability and economy in oxygen consumption.
FR7725504A 1977-08-22 1977-08-22 Treating waste water by activated sludge process - with preliminary fermentation in basin with controlled residence time Granted FR2401101A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7725504A FR2401101A1 (en) 1977-08-22 1977-08-22 Treating waste water by activated sludge process - with preliminary fermentation in basin with controlled residence time
IT2693278A IT1098279B (en) 1977-08-22 1978-08-22 BIOLOGICAL WASTEWATER TREATMENT PROCESS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7725504A FR2401101A1 (en) 1977-08-22 1977-08-22 Treating waste water by activated sludge process - with preliminary fermentation in basin with controlled residence time

Publications (2)

Publication Number Publication Date
FR2401101A1 true FR2401101A1 (en) 1979-03-23
FR2401101B1 FR2401101B1 (en) 1982-11-19

Family

ID=9194661

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725504A Granted FR2401101A1 (en) 1977-08-22 1977-08-22 Treating waste water by activated sludge process - with preliminary fermentation in basin with controlled residence time

Country Status (2)

Country Link
FR (1) FR2401101A1 (en)
IT (1) IT1098279B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016908A2 (en) * 1994-12-02 1996-06-06 Jan Topol Method and apparatus for sewage water treatment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996016908A2 (en) * 1994-12-02 1996-06-06 Jan Topol Method and apparatus for sewage water treatment
WO1996016908A3 (en) * 1994-12-02 1996-09-06 Jan Topol Method and apparatus for sewage water treatment
US5888394A (en) * 1994-12-02 1999-03-30 Jan; Topol Method and apparatus for sewage water treatment

Also Published As

Publication number Publication date
IT1098279B (en) 1985-09-07
FR2401101B1 (en) 1982-11-19
IT7826932A0 (en) 1978-08-22

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Legal Events

Date Code Title Description
ST Notification of lapse